Wind Rose Chart Widget
Copyright © 2018 EarthSoft, Inc • Modified: 12 Dec 2018
The Wind Rose Chart widget is designed to show wind data in a wind rose format. It does not provide individual wind speeds. To see individual wind speed data, use the Live Chart, Live Table or Historical Chart widgets, or run the Date Series Data Agent.
The legend shows the wind speed ranges displayed on the chart. Clicking an interval in the legend will hide the data in that wind speed interval, which will cause the chart to recalculate. The chart displays either a count of the wind speeds in that range or stacked percentages of wind speeds, depending on the option selected in the Widget Editor.
All directional measurements are based on a circle with North = 0 degrees, East = 90 degrees, and so on. Each measurement is sorted into a range that is assigned a direction, increasing by 22.5 degrees each time, to represent the 16 directions on the chart. For example, any measurement within 0-22.5 degrees would appear in the North section of the chart.
When the cursor is placed over a section of the chart, a tooltip will show the count of readings within that wind speed range and what percentage of the total readings in that direction that section entails.
Options for downloading data (as seen in the chart), printing or exporting chart images can be found from the Chart Context Menu () in the top-right corner of the chart. The Chart Context Menu allows the user to:
•Print Chart – Send the visible chart to the printer.
•Download PNG – Download the visible chart as PNG (Portable Network Graphic) image.
•Download JPEG – Download the visible chart as JPG/JPEG (Joint Photographics Experts Group) image.
•Download PDF – Download the visible chart as PDF (Portable Document Format).
•Download SVG – Download the visible chart as SVG (Scalable Vector Graphic) image.
To open the Widget Editor, select the More Options icon in the upper right corner of the Wind Rose Chart widget to open the drop-down menu and then select the Edit menu option. The widget properties are divided into two tabs: Loggers and Options.
Widget Title – By default, the widget title is EQuIS Live - Wind Rose Chart. The title can be modified.
Widget Color – The color of the widget can be changed using the Change Widget Themeicon to the left of the widget title.
Cancel – Select the Close without Saving button to exit the Widget Editor without saving changes.
Save – Changes will be applied to the widget by clicking on the Save button. The Widget Editor screen will close after the save operation is complete.
To add series to the chart, select the appropriate parameters:
•Facilities – Select a facility from the drop-down list or choose No Facility.
•Wind Logger – Shows what loggers are available within the selected facility. Only loggers that have wind data defined in one or more of their series will be shown in the list.
•Wind Direction Series – For the logger selected above, select the data series that defines the wind direction.
•Wind Speed Series – For the logger selected above, select the data series that defines the wind speed.
Click the Add button after choosing the desired parameters to include for the series in the chart. The Wind Rose Loggers list shows what series will be displayed in the chart. Select a series in the list and click the Remove Selected button to remove a series from the chart.
The following parameters for the table can be set on the Options tab:
•Show Legend – Show or hide the legend on the chart.
•Legend Position – Display the legend on the left, right, or bottom of the chart area.
•Chart Height – Indicates the desired chart height.
•Display Unit – Data will be converted to this unit when displayed on this chart.
•Interval End Points – Used to manually set the intervals (in m/s) used in the chart and displayed in the legend. For example, entering "2 4 6 8" will group data into five intervals: < 2, 2-4, 4-6, 6-8, and ≥ 8.
•Show Speeds Below Min – When unchecked, hides data readings that fall below the lowest wind speed interval in the legend. The minimum interval defaults to 0.5 m/s or is set manually in the Interval End Points parameter.
•Show Speeds Above Max – When unchecked, hides data readings that are higher than the highest wind speed interval in the legend. The maximum interval defaults to 10 m/s, or is set manually in the Interval End Points parameter.
•Stacked % Columns – When checked, alters the display of the chart to show each direction's wind speed readings, grouped into wind speed intervals, as stacked percentages as opposed to a count of readings.
•Date Range – Choose one of two options:
oSelect Fixed to set a fixed date range using Start Date and End Date. If End Date is not set, the chart will default the end date to the present.
oSelect Variable to enter a number of days back from the present for which the chart will display data (in Variable Start Date).